Home / 85,854,031.81-128,703,112.60-31,227,998.74

Finding the Fourth Proportional to 85,854,031.81, 128,703,112.60 and 31,227,998.74

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Solution

The fourth proportional to 85,854,031.81, 128,703,112.60 and 31,227,998.74 is: 46,813,650.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,854,031.81 : 128,703,112.60 = 31,227,998.74 : x
  2. Step 2: Convert to fraction form
    85,854,031.81/128,703,112.60 = 31,227,998.74/x
  3. Step 3: Cross multiply
    85,854,031.81x = 128,703,112.60 × 31,227,998.74
  4. Step 4: Simplify right side
    85,854,031.81x = 4,019,140,638,106,877.50
  5. Step 5: Solve for x
    x = 4,019,140,638,106,877.50/85,854,031.81
  6. Step 6: Final answer
    x = 46,813,650.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.